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-rw-r--r--src/argaze.test/GazeAnalysis/VelocityThresholdIdentification.py127
1 files changed, 53 insertions, 74 deletions
diff --git a/src/argaze.test/GazeAnalysis/VelocityThresholdIdentification.py b/src/argaze.test/GazeAnalysis/VelocityThresholdIdentification.py
index 425d592..262cfc0 100644
--- a/src/argaze.test/GazeAnalysis/VelocityThresholdIdentification.py
+++ b/src/argaze.test/GazeAnalysis/VelocityThresholdIdentification.py
@@ -17,8 +17,8 @@ from argaze.GazeAnalysis import VelocityThresholdIdentification
import numpy
-def build_gaze_fixation(size: int, start_position: tuple, deviation_max: float, min_time: float, max_time: float, start_ts: float = 0., validity: list = []):
- """ Generate N TimeStampedGazePositions strating from a starting position for testing purpose.
+def build_gaze_fixation(size: int, center: tuple, deviation_max: float, min_time: float, max_time: float, start_ts: float = 0., validity: list = []):
+ """ Generate N TimeStampedGazePsoitions dispersed around a center point for testing purpose.
Timestamps are current time after random sleep (second).
GazePositions are random values.
"""
@@ -26,8 +26,6 @@ def build_gaze_fixation(size: int, start_position: tuple, deviation_max: float,
start_time = time.time()
- last_valid_position = start_position
-
for i in range(0, size):
# Sleep a random time
@@ -43,21 +41,19 @@ def build_gaze_fixation(size: int, start_position: tuple, deviation_max: float,
if valid:
# Edit gaze position
- random_x = last_valid_position[0] + deviation_max * (random.random() - 0.5) / math.sqrt(2)
- random_y = last_valid_position[1] + deviation_max * (random.random() - 0.5) / math.sqrt(2)
-
+ random_x = center[0] + deviation_max * (random.random() - 0.5) / math.sqrt(2)
+ random_y = center[1] + deviation_max * (random.random() - 0.5) / math.sqrt(2)
gaze_position = GazeFeatures.GazePosition((random_x, random_y))
- # Remember last valid gaze position
- last_valid_position = gaze_position.value
-
else:
- gaze_position = GazeFeatures.UnvalidGazePosition()
+ gaze_position = GazeFeatures.GazePosition()
+
+ # Timestamp gaze position
+ gaze_position.timestamp = time.time() - start_time + start_ts
# Store gaze position
- ts = time.time() - start_time + start_ts
- ts_gaze_positions[ts] = gaze_position
+ ts_gaze_positions.append(gaze_position)
return ts_gaze_positions
@@ -91,11 +87,13 @@ def build_gaze_saccade(size: int, center_A: tuple, center_B: tuple, min_time: fl
else:
- gaze_position = GazeFeatures.UnvalidGazePosition()
+ gaze_position = GazeFeatures.GazePosition()
+
+ # Timestamp gaze position
+ gaze_position.timestamp = time.time() - start_time + start_ts
# Store gaze position
- ts = time.time() - start_time + start_ts
- ts_gaze_positions[ts] = gaze_position
+ ts_gaze_positions.append(gaze_position)
return ts_gaze_positions
@@ -122,9 +120,9 @@ class TestVelocityThresholdIdentificationClass(unittest.TestCase):
self.assertEqual(len(ts_status), size - 1)
# Check fixation
- ts, fixation = ts_fixations.pop_first()
+ fixation = ts_fixations.pop(0)
- self.assertEqual(len(fixation.positions.keys()), size - 1)
+ self.assertEqual(len(fixation), size - 1)
self.assertGreaterEqual(fixation.duration, (size - 2) * min_time)
self.assertLessEqual(fixation.duration, (size - 2) * max_time)
self.assertLessEqual(fixation.finished, True)
@@ -141,9 +139,9 @@ class TestVelocityThresholdIdentificationClass(unittest.TestCase):
velocity_max = deviation_max / min_time
ts_gaze_positions_A = build_gaze_fixation(size, center_A, deviation_max, min_time, max_time)
- ts_gaze_positions_B = build_gaze_fixation(size, center_B, deviation_max, min_time, max_time, start_ts=ts_gaze_positions_A.last[0])
+ ts_gaze_positions_B = build_gaze_fixation(size, center_B, deviation_max, min_time, max_time, start_ts=ts_gaze_positions_A[-1].timestamp)
- ts_gaze_positions = ts_gaze_positions_A.append(ts_gaze_positions_B)
+ ts_gaze_positions = ts_gaze_positions_A + ts_gaze_positions_B
gaze_movement_identifier = VelocityThresholdIdentification.GazeMovementIdentifier(velocity_max_threshold=velocity_max, duration_min_threshold=max_time*2)
ts_fixations, ts_saccades, ts_status = gaze_movement_identifier.browse(ts_gaze_positions)
@@ -154,42 +152,36 @@ class TestVelocityThresholdIdentificationClass(unittest.TestCase):
self.assertEqual(len(ts_status), size * 2 - 1)
# Check first fixation
- ts, fixation = ts_fixations.pop_first()
+ fixation = ts_fixations.pop(0)
- self.assertEqual(len(fixation.positions.keys()), size - 1)
+ self.assertEqual(len(fixation), size - 1)
self.assertGreaterEqual(fixation.duration, (size - 2) * min_time)
self.assertLessEqual(fixation.duration, (size - 2) * max_time)
self.assertLessEqual(fixation.finished, True)
# Check first saccade
- ts, saccade = ts_saccades.pop_first()
+ saccade = ts_saccades.pop(0)
- self.assertEqual(len(saccade.positions.keys()), 2)
+ self.assertEqual(len(saccade), 2)
self.assertGreaterEqual(saccade.duration, min_time)
self.assertLessEqual(saccade.duration, max_time)
self.assertLessEqual(saccade.finished, True)
# Check that last position of a movement is equal to first position of next movement
- last_ts, last_position = fixation.positions.last
- first_ts, first_position = saccade.positions.first
-
- self.assertEqual(last_ts, first_ts)
- self.assertEqual(last_position.value, first_position.value)
+ self.assertEqual(fixation[-1].timestamp, saccade[0].timestamp)
+ self.assertEqual(fixation[-1].value, saccade[0].value)
# Check second fixation
- ts, fixation = ts_fixations.pop_first()
+ fixation = ts_fixations.pop(0)
- self.assertEqual(len(fixation.positions.keys()), size)
+ self.assertEqual(len(fixation), size)
self.assertGreaterEqual(fixation.duration, (size - 1) * min_time)
self.assertLessEqual(fixation.duration, (size - 1) * max_time)
self.assertLessEqual(fixation.finished, True)
# Check that last position of a movement is equal to first position of next movement
- last_ts, last_position = saccade.positions.last
- first_ts, first_position = fixation.positions.first
-
- self.assertEqual(last_ts, first_ts)
- self.assertEqual(last_position.value, first_position.value)
+ self.assertEqual(saccade[-1].timestamp, fixation[0].timestamp)
+ self.assertEqual(saccade[-1].value, fixation[0].value)
def test_fixation_and_short_saccade_identification(self):
"""Test VelocityThresholdIdentification fixation and saccade identification."""
@@ -205,10 +197,10 @@ class TestVelocityThresholdIdentificationClass(unittest.TestCase):
velocity_max = deviation_max / min_time
ts_gaze_positions_A = build_gaze_fixation(size, center_A, deviation_max, min_time, max_time)
- ts_move_positions = build_gaze_saccade(move, out_A, center_B, min_time, min_time, start_ts=ts_gaze_positions_A.last[0])
- ts_gaze_positions_B = build_gaze_fixation(size, center_B, deviation_max, min_time, max_time, start_ts=ts_move_positions.last[0])
+ ts_move_positions = build_gaze_saccade(move, out_A, center_B, min_time, min_time, start_ts=ts_gaze_positions_A[-1].timestamp)
+ ts_gaze_positions_B = build_gaze_fixation(size, center_B, deviation_max, min_time, max_time, start_ts=ts_move_positions[-1].timestamp)
- ts_gaze_positions = ts_gaze_positions_A.append(ts_move_positions).append(ts_gaze_positions_B)
+ ts_gaze_positions = ts_gaze_positions_A + ts_move_positions + ts_gaze_positions_B
gaze_movement_identifier = VelocityThresholdIdentification.GazeMovementIdentifier(velocity_max_threshold=velocity_max, duration_min_threshold=max_time*2)
ts_fixations, ts_saccades, ts_status = gaze_movement_identifier.browse(ts_gaze_positions)
@@ -219,42 +211,36 @@ class TestVelocityThresholdIdentificationClass(unittest.TestCase):
self.assertEqual(len(ts_status), 2 * size + move - 1)
# Check first fixation
- ts, fixation = ts_fixations.pop_first()
+ fixation = ts_fixations.pop(0)
- self.assertEqual(len(fixation.positions.keys()), size - 1) # BUG: NOT ALWAYS TRUE !!!
+ self.assertEqual(len(fixation), size - 1) # BUG: NOT ALWAYS TRUE !!!
self.assertGreaterEqual(fixation.duration, (size - 2) * min_time)
self.assertLessEqual(fixation.duration, (size - 2) * max_time)
self.assertLessEqual(fixation.finished, True)
# Check first saccade
- ts, saccade = ts_saccades.pop_first()
+ saccade = ts_saccades.pop(0)
- self.assertEqual(len(saccade.positions.keys()), move + 2)
+ self.assertEqual(len(saccade), move + 2)
self.assertGreaterEqual(saccade.duration, (move + 1) * min_time)
self.assertLessEqual(saccade.duration, (move + 1) * max_time)
self.assertLessEqual(saccade.finished, True)
# Check that last position of a movement is equal to first position of next movement
- last_ts, last_position = fixation.positions.last
- first_ts, first_position = saccade.positions.first
-
- self.assertEqual(last_ts, first_ts)
- self.assertEqual(last_position.value, first_position.value)
+ self.assertEqual(fixation[-1].timestamp, saccade[0].timestamp)
+ self.assertEqual(fixation[-1].value, saccade[0].value)
# Check second fixation
- ts, fixation = ts_fixations.pop_first()
+ fixation = ts_fixations.pop(0)
- self.assertEqual(len(fixation.positions.keys()), size)
+ self.assertEqual(len(fixation), size)
self.assertGreaterEqual(fixation.duration, (size - 1) * min_time)
self.assertLessEqual(fixation.duration, (size - 1) * max_time)
self.assertLessEqual(fixation.finished, True)
# Check that last position of a movement is equal to first position of next movement
- last_ts, last_position = saccade.positions.last
- first_ts, first_position = fixation.positions.first
-
- self.assertEqual(last_ts, first_ts)
- self.assertEqual(last_position.value, first_position.value)
+ self.assertEqual(saccade[-1], fixation[0])
+ self.assertEqual(saccade[-1].value, fixation[0].value)
def test_invalid_gaze_position(self):
"""Test VelocityThresholdIdentification fixation and saccade identification with invalid gaze position."""
@@ -278,17 +264,17 @@ class TestVelocityThresholdIdentificationClass(unittest.TestCase):
self.assertEqual(len(ts_status), len(validity)-5)
# Check first fixation
- ts, fixation = ts_fixations.pop_first()
+ fixation = ts_fixations.pop(0)
- self.assertEqual(len(fixation.positions.keys()), 6)
+ self.assertEqual(len(fixation), 6)
self.assertGreaterEqual(fixation.duration, 5 * min_time)
self.assertLessEqual(fixation.duration, 5 * max_time)
self.assertLessEqual(fixation.finished, True)
# Check second fixation
- ts, fixation = ts_fixations.pop_first()
+ fixation = ts_fixations.pop(0)
- self.assertEqual(len(fixation.positions.keys()), 4)
+ self.assertEqual(len(fixation), 4)
self.assertGreaterEqual(fixation.duration, 3 * min_time)
self.assertLessEqual(fixation.duration, 3 * max_time)
self.assertLessEqual(fixation.finished, True)
@@ -305,34 +291,27 @@ class TestVelocityThresholdIdentificationClass(unittest.TestCase):
velocity_max = deviation_max / min_time
ts_gaze_positions_A = build_gaze_fixation(size, center_A, deviation_max, min_time, max_time)
- ts_gaze_positions_B = build_gaze_fixation(size, center_B, deviation_max, min_time, max_time, start_ts=ts_gaze_positions_A.last[0])
+ ts_gaze_positions_B = build_gaze_fixation(size, center_B, deviation_max, min_time, max_time, start_ts=ts_gaze_positions_A[-1].timestamp)
- ts_gaze_positions = ts_gaze_positions_A.append(ts_gaze_positions_B)
+ ts_gaze_positions = ts_gaze_positions_A + ts_gaze_positions_B
gaze_movement_identifier = VelocityThresholdIdentification.GazeMovementIdentifier(velocity_max_threshold=velocity_max, duration_min_threshold=max_time*2)
-
- # Get last ts to terminate identification on last gaze position
- last_ts, _ = ts_gaze_positions.last
# Iterate on gaze positions
- for ts, gaze_position in ts_gaze_positions.items():
+ for gaze_position in ts_gaze_positions:
- finished_gaze_movement = gaze_movement_identifier.identify(ts, gaze_position, terminate=(ts == last_ts))
+ finished_gaze_movement = gaze_movement_identifier.identify(gaze_position.timestamp, gaze_position, terminate=(gaze_position.timestamp == ts_gaze_positions[-1]))
# Check that last gaze position date is not equal to given gaze position date
- if finished_gaze_movement.valid:
+ if finished_gaze_movement:
- last_ts, _ = finished_gaze_movement.positions.last
-
- self.assertNotEqual(last_ts, ts)
+ self.assertNotEqual(finished_gaze_movement[-1].timestamp, gaze_position.timestamp)
# Check that last gaze position date of current movement is equal to given gaze position date
current_gaze_movement = gaze_movement_identifier.current_gaze_movement
- if current_gaze_movement.valid:
-
- last_ts, _ = current_gaze_movement.positions.last
+ if current_gaze_movement:
- self.assertEqual(last_ts, ts)
+ self.assertEqual(current_gaze_movement[-1].timestamp, gaze_position.timestamp)
if __name__ == '__main__':